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kumpel [21]
3 years ago
6

rectangle P’R’S’T is a dilation of rectangle PRST and scale factor is 3. write an equation for the perimeter of P’R’S’T if the o

riginal sides of the rectangle were x and y
Mathematics
1 answer:
wariber [46]3 years ago
5 0
The perimeter formula for the original PRST rectangle is:
 P = 2x + 2y
 To find the perimeter formula of the rectangle P'R'S'T we must use the scale factor and substitute in each dimension.
 We have then:
 P '= 2 (3x) +2 (3y)
 Rewriting:
 P '= 6x + 6y
 P '= 6 (x + y)
 Answer:
 
An equation for the perimeter of P'R'S'T is:
 
P '= 6 (x + y)
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I'm really stuck on this math problem. I never learned this in school. Can someone please help me out? Thank you
romanna [79]
Hehe, these are fun to do. There are two ways to do this kind of problem. You can use the pythagorean theorem or we can use the distance formula.
Distance formula:
d= \sqrt{(x2-x1)^2+(y2-y1)^2}

Pythagorean Theorem:
a^2+b^2=c^2

Distance formula is better if you're finding distance between two coordinates. The Pythagorean Theorem only really works for independent values. If I had 2 sides of a triangle, and I needed to find the third, I'd use this equation to find it. In this case, we'll use the distance formula.

I'll work the first one out for you:
 x1   y1     x2  y2  
(3,   2) & (7,   4)

d= \sqrt{(7-3)^2+(4-2)^2}
                           v
d= \sqrt{(4)^2+(2)^2}
                           v
d= \sqrt{(16+4}
                           v
d= \sqrt{20}

There's your answer!

<em>
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<em>I spent a lot of time making this answer to help you. Please rate it Brainliest!</em>


7 0
3 years ago
NEED HELL ASAP WILL GIVE BRAINLY algebra 1
Lesechka [4]

Answer:

x - 6 = 24

Step-by-step explanation:

1/3 x - 2 = 8

Multiply all the terms by 3

3*1/3x - 2*3 = 8*3

x - 6 = 24

4 0
3 years ago
Read 2 more answers
A boy makes a cuboid of plasticine of sides 5cm, 2cm, 5cm. How manny such cuboids will he need to form a cube?
ruslelena [56]

Answer:

Step-by-step explanation:

L.C.M. of 5,2=10

so it should be  of dimensions 10×10×10

it should have 5 cuboids in first row.

then it will make a cuboid 5×10×5

5 cuboids in the second row on top of first row .

Then it will make 5×10×10 cuboid

To make 10×10×10

double the cuboids  to make the length=10 and height=10..

so in all 20 cuboids are needed.

2 rows of 5 cuboids on the floor and 2 rows of 5 cuboids on the top.

in all 10 cuboids of  dimensions 5×2×5

so 9 more cuboids are needed to make a c

3 0
3 years ago
Diegi is trying to find the value of x in 5 x=35. He draws a diagram but is not cerntal how to proceed.
inessss [21]

Answer:

The answer is B because it's correct you guessed it right

Step-by-step explanation:

5 0
3 years ago
Find the digits in the tens place, in the hundredths place, and in the thousandths place for the following number 748.6291
tresset_1 [31]

Answer:

8 for tens, 9 for hundredths and thousandths is 1

Step-by-step explanation:

you can find the number by looking at the place of the numbers if it is tens look at the tens place which is the number eight as tens are 2 digit numbers

5 0
3 years ago
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